title: Spectroscopy of f-f radiative transitions of Y b(³+) ions in ytterbium doped orthophosphates at ambient and high hydrostatic pressures.
abstract: Studies of absorption and luminescence spectra, and luminescence decay times of the intrashell f-f transitions of Y b(³+) ions in bulk orthophosphates at different temperatures and at high hydrostatic pressures are presented. The spectroscopic properties of Y₀.₉₉Y b₀.₀₁PO₄ crystal with a tetragonal zircon structure and Gd₀.₉₉Y b₀.₀₁PO₄ and La₀.₉₅Y b₀.₀₅PO₄ crystals with a monoclinic monazite structure are compared. Experiments at ambient pressure were performed at temperatures from 10 to 295 K whereas measurements at high pressure were performed in a diamond-anvil cell at 10 K with a pressure up to 160 kbar. The results reveal a high thermal and pressure stability of the optical properties of the examined crystals as well as the dependence of Y b(³+) emission properties on the local symmetry of the site occupied by the ytterbium dopant.
authors.affiliation: Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland. kaminska@ifpan.edu.pl
authors.forename: A
authors.initials: A
authors.lastname: Kaminska
authors.forename: A
authors.initials: A
authors.lastname: Duzynska
authors.forename: A
authors.initials: A
authors.lastname: Suchocki
authors.forename: M
authors.initials: M
authors.lastname: Bettinelli